Dog and cat food calculator
Find out how many grams of food to give your dog or cat per day from its weight, life stage, activity level and the food's calories.
How many grams of food per day?
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Dog and cat food calculator: what it is for
Choose dog or cat, enter the weight, life stage, activity level and the food's calories, found on the bag. The calculator uses the energy formula vets use and shows the grams per day, per meal and how much food you'll go through in a month.
Use it as a starting point and keep an eye on your pet's weight.
How to use
- Choose dog or cat.
- Enter weight, life stage and the food's calories.
- See the grams per day and per meal.
When to use it
- Adjust a growing puppy's food.
- Help a pet lose weight.
- Know how many kilos of food to buy per month.
Frequently asked questions
How do I find the food's calories?
Look on the bag for the metabolizable energy, in kcal per kg (or kcal per cup). Premium foods usually have 3,500 to 4,200 kcal/kg; basic ones, 3,000 to 3,500.
How is the amount calculated?
From the resting energy requirement (70 × weight^0.75) multiplied by a factor that depends on the animal's life stage and activity. Then the daily energy is converted into grams using the food's calories.
Can I rely on this number alone?
Use it as a starting point and check your pet's weight every two weeks. Animals with health conditions, pregnant or overweight should have their diet guided by a veterinarian.
Is it really free?
Yes, 100% free. No sign-up, no subscription and no usage limits. All Tools123 tools are free and run right in your browser.